feat: unstable nightly builds

[34fathombelow]

This PR will build container images and helm-charts daily from the main branch ( M-Fri). The format for the unstable builds will be v0.1.2-unstable-20231023.

Unstable CLI binaries will come next with the documentation on how to use unstable builds for testing. Once this PR is merged and a build is kicked off at the daily scheduled time of 6P.M. PST you can use the following to get started.

helm install kargo \
oci://ghcr.io/akuity/kargo-charts-unstable/kargo --version 0.1.2-unstable-20231023 \
--namespace kargo \
--create-namespace \
--set image.repository=ghcr.io/akuity/kargo-unstable \
--set api.service.type=NodePort \
--set api.service.nodePort=31444 \
--set api.adminAccount.password=admin \
--set api.adminAccount.tokenSigningKey=iwishtowashmyirishwristwatch \

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[krancour]

@34fathombelow thank you for this! This all looks sensible to me. Couple Qs posed inline.

More general... I know you'd asked about the possibility of a separate workflow. I think I might prefer that only because it seems the behavior for the official release vs nightly are more divergent than we maybe anticipated initially. What's your take? If you prefer it as is, I'll go along with it.

[34fathombelow]

@34fathombelow thank you for this! This all looks sensible to me. Couple Qs posed inline.

More general... I know you'd asked about the possibility of a separate workflow. I think I might prefer that only because it seems the behavior for the official release vs nightly are more divergent than we maybe anticipated initially. What's your take? If you prefer it as is, I'll go along with it.

I personally do not have a preference. I choose to include it in the release workflow to reduce the maintainability of a separate workflow.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c2479eb) 51.51% compared to head (02ec3cb) 51.51%.

❗ Current head 02ec3cb differs from pull request most recent head 37e5ee7. Consider uploading reports for the commit 37e5ee7 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1017   +/-   ##
=======================================
  Coverage   51.51%   51.51%           
=======================================
  Files         104      104           
  Lines        7675     7675           
=======================================
  Hits         3954     3954           
  Misses       3576     3576           
  Partials      145      145           

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[krancour]

Gonna merge this and let'er rip at 13:00. That will validate it all and if we want to refactor a bit later, we can.